EcoR1 Capital, LLC

Insider Reports History

Location
357 Tehama Street #3, San Francisco, CA
Signature
/s/ Oleg Nodelman
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by EcoR1 Capital, LLC:

Stock Role Class Num Shares Value Price $ Report Date Ownership
Mirati Therapeutics, Inc. 10%+ Owner Common Stock 7.4M $437M $59.02 Dec 18, 2023 Indirect
Zymeworks Inc. Director, 10%+ Owner Common Stock 23M $292M $12.71 Jun 26, 2025 Indirect
ANAPTYSBIO, INC Director, 10%+ Owner Common Stock 7.88M $102M $12.95 Jan 2, 2025 Indirect
iTeos Therapeutics, Inc. 10%+ Owner Common Stock 10.7M $85.5M $8.00 May 15, 2025 Indirect
Zymeworks Inc. Director, 10%+ Owner Pre-Funded Warrants 5.09M $50M $9.83 Dec 26, 2023 Indirect
PROTHENA CORP PUBLIC LTD CO 10%+ Owner Ordinary Shares 5.3M $40.5M $7.64 May 6, 2025 Indirect
Graphite Bio, Inc. 10%+ Owner Common Stock 8.54M $34.8M $4.08 Jan 6, 2023 Indirect
Tango Therapeutics, Inc. 10%+ Owner Common Stock 10.6M $31M $2.92 Nov 7, 2024 Indirect
Voyager Therapeutics, Inc. 10%+ Owner Common Stock 3.85M $27.5M $7.15 Jan 11, 2023 Indirect
Adaptimmune Therapeutics PLC 10%+ Owner Ordinary Shares 100M $25.1M $0.25 Jul 30, 2025 Indirect
TScan Therapeutics, Inc. 10%+ Owner Voting Common Stock 5M $24.8M $4.97 May 26, 2023 Indirect
Mersana Therapeutics, Inc. 10%+ Owner Common Stock 11.3M $21.5M $1.90 Dec 19, 2024 Indirect
Corvus Pharmaceuticals, Inc. 10%+ Owner Common Stock 81.1K $199K $2.45 Oct 1, 2021 Indirect
Mersana Therapeutics, Inc. 10%+ Owner Pre-Funded Warrants 8.04M Dec 19, 2024 Indirect
Odonate Therapeutics, Inc. 10%+ Owner Common Stock 0 $1.55 Dec 10, 2021 Indirect
Zymeworks Inc. Director, 10%+ Owner Pre-Funded Warrants (right to acquire) 0 Jun 26, 2025 Indirect

Insider Reports Filed by EcoR1 Capital, LLC

Symbol Company Period Transactions Value $ Form Type Date Filed Role
ADAP Adaptimmune Therapeutics PLC Jul 28, 2025 3 -$6.89M 4 Jul 30, 2025 10%+ Owner
ZYME Zymeworks Inc. Jun 26, 2025 3 -$13 4 Jun 27, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. May 15, 2025 2 $636K 4 May 19, 2025 Director, 10%+ Owner
ITOS iTeos Therapeutics, Inc. May 14, 2025 2 $38.7M 4 May 16, 2025 10%+ Owner
ITOS iTeos Therapeutics, Inc. May 13, 2025 0 $0 3 May 13, 2025 10%+ Owner
PRTA PROTHENA CORP PUBLIC LTD CO May 2, 2025 3 -$50.8M 4 May 6, 2025 10%+ Owner
ZYME Zymeworks Inc. Apr 16, 2025 2 $1.46M 4 Apr 18, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Apr 3, 2025 2 $3.62M 4 Apr 7, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Mar 31, 2025 3 $1.5M 4 Apr 2, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Mar 25, 2025 2 $1.23M 4 Mar 27, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Mar 20, 2025 3 $1.64M 4 Mar 24, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Mar 17, 2025 3 $2.87M 4 Mar 19, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Mar 11, 2025 3 $13.1M 4 Mar 13, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Jan 16, 2025 2 $1.96M 4 Jan 21, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Jan 13, 2025 3 $2.28M 4 Jan 15, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Jan 8, 2025 2 $2.97M 4 Jan 10, 2025 Director, 10%+ Owner
ANAB ANAPTYSBIO, INC Dec 30, 2024 3 $1.1M 4 Jan 2, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Dec 30, 2024 3 $5.32M 4 Jan 2, 2025 Director, 10%+ Owner
ZYME Zymeworks Inc. Dec 24, 2024 3 $1.88M 4 Dec 27, 2024 Director, 10%+ Owner
ZYME Zymeworks Inc. Dec 19, 2024 3 $17.5M 4/A Dec 26, 2024 Director, 10%+ Owner
MRSN Mersana Therapeutics, Inc. Dec 19, 2024 2 $0 4 Dec 23, 2024 10%+ Owner
TNGX Tango Therapeutics, Inc. Nov 6, 2024 3 -$8.44M 4 Nov 8, 2024 10%+ Owner
ANAB ANAPTYSBIO, INC Aug 14, 2024 1 $10M 4 Aug 16, 2024 10%+ Owner
ADAP Adaptimmune Therapeutics PLC Mar 8, 2024 0 $0 3 Mar 26, 2024 10%+ Owner
ZYME Zymeworks Inc. Dec 26, 2023 1 $50M 4 Dec 23, 2024 10%+ Owner
ZYME Zymeworks Inc. Dec 26, 2023 1 $50M 4 Dec 28, 2023 10%+ Owner
MRTX Mirati Therapeutics, Inc. Dec 18, 2023 0 $0 3 Dec 27, 2023 10%+ Owner
TNGX Tango Therapeutics, Inc. Oct 13, 2023 0 $0 3 Oct 16, 2023 10%+ Owner
MRSN Mersana Therapeutics, Inc. Jul 27, 2023 0 $0 3 Jul 31, 2023 10%+ Owner
ZYME Zymeworks Inc. Jun 16, 2023 1 $27.2M 4 Jun 21, 2023 10%+ Owner
TCRX TScan Therapeutics, Inc. May 26, 2023 0 $0 3 Jun 5, 2023 10%+ Owner
ZYME Zymeworks Inc. Mar 28, 2023 1 $1.6M 4 Mar 30, 2023 10%+ Owner
ZYME Zymeworks Inc. Jan 19, 2023 2 $2.98M 4 Jan 23, 2023 10%+ Owner
ZYME Zymeworks Inc. Jan 13, 2023 3 $9.7M 4 Jan 18, 2023 10%+ Owner
ZYME Zymeworks Inc. Jan 10, 2023 2 $7.87M 4 Jan 12, 2023 10%+ Owner
VYGR Voyager Therapeutics, Inc. Jan 9, 2023 3 -$7.14M 4 Jan 11, 2023 10%+ Owner
GRPH Graphite Bio, Inc. Jan 6, 2023 0 $0 3 Jan 6, 2023 10%+ Owner
ZYME Zymeworks Inc. Oct 31, 2022 0 $0 3 Nov 1, 2022 10%+ Owner
VYGR Voyager Therapeutics, Inc. Jun 21, 2022 2 $2.66M 4 Jun 23, 2022 10%+ Owner
ANAB ANAPTYSBIO, INC May 5, 2022 2 $0 4 May 9, 2022 10%+ Owner
PRTA PROTHENA CORP PUBLIC LTD CO May 5, 2022 2 $0 4 May 9, 2022 10%+ Owner
VYGR Voyager Therapeutics, Inc. Apr 21, 2022 0 $0 3 Apr 25, 2022 10%+ Owner
PRTA PROTHENA CORP PUBLIC LTD CO Jan 12, 2022 1 $11.3M 4 Jan 12, 2022 10%+ Owner
ODTC Odonate Therapeutics, Inc. Dec 1, 2021 5 -$9.43M 4 Dec 10, 2021 10%+ Owner
ODTC Odonate Therapeutics, Inc. Nov 17, 2021 0 $0 3 Nov 18, 2021 10%+ Owner
CRVS Corvus Pharmaceuticals, Inc. Sep 30, 2021 2 -$25.1M 4 Oct 1, 2021 10%+ Owner
CRVS Corvus Pharmaceuticals, Inc. Sep 22, 2021 0 $0 3 Sep 22, 2021 10%+ Owner
PRTA PROTHENA CORP PUBLIC LTD CO Jun 18, 2021 2 $7.5M 4 Jun 22, 2021 10%+ Owner